Chapter 1, Equations and Graphs - Section 1.2 - Graphs of Equations in Two Variables; Circles - 1.2 Exercises - Page 101: 6

a) x-intercepts: $-3,3$ y-intercepts: $-1,2$ b) y-axis

a) we can visually see that the curve hits the x-axis at $-3$ and $3$, and hits the y-axis at $-1$ and $2$. b) The area to the left of the y-axis is similar to the area to the right, so the function is symmetric about the y-axis